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FBDisplayCommands.py
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FBDisplayCommands.py
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#!/usr/bin/python
# Copyright (c) 2014, Facebook, Inc.
# All rights reserved.
#
# This source code is licensed under the BSD-style license found in the
# LICENSE file in the root directory of this source tree. An additional grant
# of patent rights can be found in the PATENTS file in the same directory.
import lldb
import os
import time
import fblldbviewhelpers as viewHelpers
import fblldbbase as fb
import fblldbobjcruntimehelpers as runtimeHelpers
def lldbcommands():
return [
FBCoreAnimationFlushCommand(),
FBDrawBorderCommand(),
FBRemoveBorderCommand(),
FBMaskViewCommand(),
FBUnmaskViewCommand(),
FBShowViewCommand(),
FBHideViewCommand(),
]
class FBDrawBorderCommand(fb.FBCommand):
def name(self):
return 'border'
def description(self):
return 'Draws a border around <viewOrLayer>. Color and width can be optionally provided.'
def args(self):
return [ fb.FBCommandArgument(arg='viewOrLayer', type='UIView/NSView/CALayer *', help='The view/layer to border. NSViews must be layer-backed.') ]
def options(self):
return [
fb.FBCommandArgument(short='-c', long='--color', arg='color', type='string', default='red', help='A color name such as \'red\', \'green\', \'magenta\', etc.'),
fb.FBCommandArgument(short='-w', long='--width', arg='width', type='CGFloat', default=2.0, help='Desired width of border.')
]
def run(self, args, options):
colorClassName = 'UIColor'
isMac = runtimeHelpers.isMacintoshArch()
if isMac:
colorClassName = 'NSColor'
layer = viewHelpers.convertToLayer(args[0])
lldb.debugger.HandleCommand('expr (void)[%s setBorderWidth:(CGFloat)%s]' % (layer, options.width))
lldb.debugger.HandleCommand('expr (void)[%s setBorderColor:(CGColorRef)[(id)[%s %sColor] CGColor]]' % (layer, colorClassName, options.color))
lldb.debugger.HandleCommand('caflush')
class FBRemoveBorderCommand(fb.FBCommand):
def name(self):
return 'unborder'
def description(self):
return 'Removes border around <viewOrLayer>.'
def args(self):
return [ fb.FBCommandArgument(arg='viewOrLayer', type='UIView/NSView/CALayer *', help='The view/layer to unborder.') ]
def run(self, args, options):
layer = viewHelpers.convertToLayer(args[0])
lldb.debugger.HandleCommand('expr (void)[%s setBorderWidth:(CGFloat)%s]' % (layer, 0))
lldb.debugger.HandleCommand('caflush')
class FBMaskViewCommand(fb.FBCommand):
def name(self):
return 'mask'
def description(self):
return 'Add a transparent rectangle to the window to reveal a possibly obscured or hidden view or layer\'s bounds'
def args(self):
return [ fb.FBCommandArgument(arg='viewOrLayer', type='UIView/NSView/CALayer *', help='The view/layer to mask.') ]
def options(self):
return [
fb.FBCommandArgument(short='-c', long='--color', arg='color', type='string', default='red', help='A color name such as \'red\', \'green\', \'magenta\', etc.'),
fb.FBCommandArgument(short='-a', long='--alpha', arg='alpha', type='CGFloat', default=0.5, help='Desired alpha of mask.')
]
def run(self, args, options):
viewOrLayer = fb.evaluateObjectExpression(args[0])
viewHelpers.maskView(viewOrLayer, options.color, options.alpha)
class FBUnmaskViewCommand(fb.FBCommand):
def name(self):
return 'unmask'
def description(self):
return 'Remove mask from a view or layer'
def args(self):
return [ fb.FBCommandArgument(arg='viewOrLayer', type='UIView/CALayer *', help='The view/layer to mask.') ]
def run(self, args, options):
viewOrLayer = fb.evaluateObjectExpression(args[0])
viewHelpers.unmaskView(viewOrLayer)
class FBCoreAnimationFlushCommand(fb.FBCommand):
def name(self):
return 'caflush'
def description(self):
return 'Force Core Animation to flush. This will \'repaint\' the UI but also may mess with ongoing animations.'
def run(self, arguments, options):
viewHelpers.flushCoreAnimationTransaction()
class FBShowViewCommand(fb.FBCommand):
def name(self):
return 'show'
def description(self):
return 'Show a view or layer.'
def args(self):
return [ fb.FBCommandArgument(arg='viewOrLayer', type='UIView/NSView/CALayer *', help='The view/layer to show.') ]
def run(self, args, options):
viewHelpers.setViewHidden(args[0], False)
class FBHideViewCommand(fb.FBCommand):
def name(self):
return 'hide'
def description(self):
return 'Hide a view or layer.'
def args(self):
return [ fb.FBCommandArgument(arg='viewOrLayer', type='UIView/NSView/CALayer *', help='The view/layer to hide.') ]
def run(self, args, options):
viewHelpers.setViewHidden(args[0], True)